Stove.



No. 652,321. Patented June 26, |900.

L. LORENZ.

STUVE.

1 (Application filed July 15, 1899.) .(Nn Model.) 2' Sheets--Sheet l.

'mi mams Perses co. PnoTaLn-No.. wnsummou, D. c.

No. 652,32I. Patanted lune 26, |900.

L. LORENZ.

STUVE. (Application med .Ily 15, 1699.) (No Model.) 2 VShams-Sheet 2.

fig .5T

UNITED STATES PATENT OFFICE.-

4Louis LORENZ, oE BERLIN, GERMANY.

STOVE.

SPECIFICATION forming part of Letters Patent No. 652,321, dated June 26, 1900.

Application filed July 15,1899. Serial No. 723,993. (No model.)

To @ZZ whom it may concern.-

' Beit known that LLOUIS LORENZ, engineer, a subject of the King of Prussia, German Emperor, residing at 10i Kurassierstrasse, Ber- 1in, in the Kingdom of Prussia, Germany, have invented certain new and useful Improvements in Stoves, (for which I have applied for-a patent in Germany, dated September 20, 1898, and for design patents, dated March 27, 1899, andMarch 30, 1899, and for a patent in France, dated December l, 1898; in Austria, dated March 16, 1899; in Hungary, dated March 18, 1899, and in England, dated June 21,1899 of which the following is a specification.

The subject-matter of this invention is an independent stove with descending and reascending ire-gas current or stove insertion to .be fitted into tiled stoves and which is provided with two heating-chambers placed side by side and communicating with each other by a narrow slot only in the lower part and in which in both forms of execution after the complete suppression of the re the egress of any combustion-gases which may still be present or may be subsequently formed in the stove is rendered possible by an arrangement which is at the same time brought into action on the draft being shut off. In the annexed drawings this construction of stove is shown.

Figure 1 is a vertical section along the line A B. Fig. 2 is a front elevation and partial vertical section along line C D, while Fig. 3 shows the tire-basket carrier; Fig. 4, the grate of the fire-basket; Fig. 5, a toothed protecting-ring above it; Fig. 6, the draft-regulating arrangement in front elevation; Fig. 7, the draft-regulating arrangement in vertical section along line E F; Fig, 8, the same line along G H.

The outer casing of the stove, which may either be made of round or polygonal section, may preferably consist of two superposed halves 'c and b, of which the upper one receives the fire-basket c and the fuel-chamber d, while the lower one, which by a vertical partition s is divided into two separate chain bers f g, (which, however, communicate with each other in the lower part,) serves to receive the products of combustion and conduct them to the chimney-flue along a channel which first descends and then ascends. The upper halt' of the stove-casing` is provided with a convex and perforated cover h, underneath which the closing-plate Z is firmly seated, which is provided With an aperture i, serving for the introduction of fuel, (and which can be closed,) and with a Water vessel 7c. The fuel-chamber d, arranged underneath 'this plate, consists of a cylindrical and a conical part, the cylindric extension d of which terminates above the first basket c at a conven; ient distance from its grate m. The tire-bas'- ket, which is closed in all around and is only open above toward the fuel-hopper orifice, comprises, besides the grate, a toothed protecting-ring n, arranged above it, which is to prevent excessive accumulation of coal on the grate, and besides this an ash-box 0 is arranged underneath, the contents of which can be removed as required through a horizontal nozzle p, of rectangular section, arranged in the side of the tire-basket. The upper margin of the opening of the fire-basket is provided with flat lobes turned toward the outside in order to prevent any coal from dropping into the annular space ,between its outer side and the stove-casing. The inner surfaces of this space, through which the fire` gases pass after their generation in the grate on their way to the anterior heating-chamber f, are provided with longitudinal and transverse grooves ornotches, so as to afford a hold for iireproof material, with which they will require to be lined in order to resist the great heat existing in this part. This inner circular space is accessible through a door 13. 'The nre-basket is held in position by a ring q, which rests on three or more projections on brackets or supports r, which are arranged on the inner side of the upper margin of the lower part of the stove-casing h.

By means of the partition s, Which is rst placed vertically and then extends toward the side, terminating above the pipe-nozzle t, (arranged in this part for the purpose of carrying oft the regases) this lower part of the stovescasing is divided into two separate halves, which, however, communicate with each other by a slot n immediately' above the bottom u.

Into an opening arranged in the upper part of the stove-casing, on a level with the lirebasket, a box w, closed on all sides, is ar- IOC ranged so as to fithermetically into this opening, sothat its outer sidef'comes nearlyiiush with the margins of the opening, while its hindmost half is inserted into the rectangular nozzle p, (provided for the removal of ashes in the side ot' the lire-basket 0,) so as to ft tightly into it. This box is fitted with two slides, one of which, y, slides along the vertical Wall at the back in front of an opening 7, arranged in it, for the purpose of regnlating the admission of air to the grate of the fire-basket, whilethe other, z, serves to open the slots 2 in the bottom plate (leading into the anterior heating-chamber f) Whenever the opening 7, controlled by the lirebasket slide, is Wholly or nearly closed. Both slides 'y and ,z are worked simultaneously by means of a horizontal spindle 4, which is provided outside the perforated front face of the box with an adjusting-lever 3, the firstlnentioned slide being acted upon direct and the second by means of a lever, so that slide z will always be open whenever y is Wholly or partially closed. By this combination a draft through the stove is established, even when the fire has been extinguished, by shuttingoil the supply of air to the grate.

The front face of box .'Lr, which projects just outside the stove-casing, is provided with a projecting segment-strip 6, into the notches of which the adjustable spring-lever 3 can be .2 l y j 652,321

xed, so as to regulate the intensity`of`-heat ingV to the desired degree by more or less opening 'the orifice 7 throughwhich air is admitted to the grate.

Having nowr described my invention, what I claim, and desire to secure by Letters Patent, is-

In a stove, the combination of the lower section b, provided with the smoke-outlet t, the upper section a superimposed on said lower section, the tire-basket c supported on said upper section, and provided with the opening p, the box a: fitted into the upper section adjacent to said fire-basket and cornmunicating by means of apertures through its walls with the fire-basket c, the outside air, and the lower section b, slides y and ,e controlling the openings leading into the lire-basket, and the lower section respectively, and a common operating means for said slides, the relative arrangement of the slides being such that when the opening leading to the tire-basket is closed, the opening leading to the lower section is open, for the purpose set forth.

In witness whereof I have hereunto set my hand in presence of two Witnesses.

LOUIS LORENZ.

Witnesses:

HENRY I-IASPER, WOLDEMAR HAUPT. 

